Case Study on Physical Descaling of Scaling in Heat Exchange Stations of Environmental Protection Companies

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【Abstract】Installing electronic descaling devices in heat exchange stations provides descaling and anti-scaling protection for important heat exchange equipment； Analyze the scaling phenomenon of the equipment ； An analysis is provided to explain the advantages of electronic descaling devices compared to water treatment chemicals. 【Keywords】Heat exchange station, scaling, descaling and anti-scaling, water treatment chemicals, electronic descaler, Fosilan Company. I. Equipment overview: Heat exchange stations can be classified into direct supply stations and indirect supply stations based on the heating method; high-temperature hot water or steam generated by thermal power plants is delivered to users or enterprises that require heat. Equipment in heat exchange stations typically includes plate heat exchangers, circulation pumps, primary and secondary line strainers, make-up water pumps, water tanks, meters, control valves, etc. As the primary device for heat exchange, plate heat exchangers are prone to scaling due to factors such as water quality. This scaling leads to blockages in the equipment, a reduction in the heat exchange area, and a decrease in the heat transfer coefficient, all of which result in lower heat exchange efficiency and energy waste. II. Problem analysis: The formation of scale in traditional manufacturing processes is a complex physicochemical process. Firstly, the presence of calcium, magnesium ions, as well as other heavy metal ions in water is the fundamental cause of scale formation ； Secondly, soluble substances precipitate out of the supersaturated water and adhere to the heated surface of the metal, which is another cause of scale formation. Traditional manufacturing processes involve the use of chemical agents such as scale and corrosion inhibitors, as well as bactericides and algaecides. Due to their high content of organic compounds like phosphorus, these agents can have negative effects on the ecological environment when discharged. With increasingly strict environmental regulations across the country and more stringent enforcement of environmental policies, properly managing wastewater discharge has become a practical challenge for enterprises at present. III. Analysis of the technical advantages of electronic descaling devices: Physical descaling does not alter the chemical composition of the water, thus eliminating the risk of chemical pollution and achieving true zero emissions. One-time investment, long-term benefits. It provides protection for pipes or heat exchange equipment. The energy consumption required by the device is negligible. The equipment is easy to operate and maintain, has a long service life, and its diverse functions enable it to kill bacteria and algae as well as prevent corrosion. IV. Installation procedures: 1. Select an appropriate installation location (away from pumps, elbows, etc.; the minimum distance must meet technical requirements). 2. Choose the appropriate setting based on the pipe material (metallic or non-metallic). 3. Determine the number of wraps required based on the water quality to be tested (12 to 16 wraps). 4. Decide whether to increase the setting based on the flow rate (0 to 9)